17 Jan, 2014
1 commit
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The cache's policy may have been established using the "default" alias,
which is currently the "mq" policy but the default policy may change in
the future. It is useful to know exactly which policy is being used.Add a 'real' member to the dm_cache_policy_type structure and have the
"default" dm_cache_policy_type point to the real "mq"
dm_cache_policy_type. Update dm_cache_policy_get_name() to check if
real is set, if so report the name of the real policy (not the alias).Requested-by: Jonathan Brassow
Signed-off-by: Mike Snitzer
10 Nov, 2013
1 commit
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Return -EINVAL when the specified cache policy is unknown rather than
returning -ENOMEM.Signed-off-by: Mikulas Patocka
Signed-off-by: Mike Snitzer
21 Mar, 2013
1 commit
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Separate dm cache policy version string into 3 unsigned numbers
corresponding to major, minor and patchlevel and store them at the end
of the on-disk metadata so we know which version of the policy generated
the hints in case a future version wants to use them differently.Signed-off-by: Mike Snitzer
Signed-off-by: Alasdair G Kergon
02 Mar, 2013
1 commit
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Add a target that allows a fast device such as an SSD to be used as a
cache for a slower device such as a disk.A plug-in architecture was chosen so that the decisions about which data
to migrate and when are delegated to interchangeable tunable policy
modules. The first general purpose module we have developed, called
"mq" (multiqueue), follows in the next patch. Other modules are
under development.Signed-off-by: Joe Thornber
Signed-off-by: Heinz Mauelshagen
Signed-off-by: Mike Snitzer
Signed-off-by: Alasdair G Kergon
